高产酒精酵母的筛选及鉴定

Selection and Identification of High Alcohol Yield Producing Strain

试验采用含有高浓度酒精选择性培养基从自然界中分离得到 1 1 5株耐高酒精酵母 ,经过初筛、复筛 ,得到 1株高产酒精酵母菌株SP 48,在料水比 1∶2 ,发酵 72h的条件下 ,静止发酵 ,成熟醪酒精的体积分数可达 1 6 2。经鉴定该酵母为酵母属 (Saccharomyces)的酿酒酵母 (Saccharomycescerevisiae)。

strains of yeast which can endure high alcohol comcentration were isolated from surounding, and are based on selective medium of high alcohol concentration After selected by two grades, a strain was got which produces high alcohol yield named SP 48 It was identified as Saccharomyces cerevisiace Under the condition that the ratio of material and water is 1∶2 , and fermentation time is 72 hours , the alcohol yield is 16 5